AP2-20N - Motion detector OPTEX - Free user manual and instructions

Product Type	Passive Infrared (PIR) Motion Detector
Brand	OPTEX
Model	AP2-20N
Detection Method	Passive Infrared (PIR) using dual element pyroelectric sensor
Detection Range	12 m x 12 m (90° wide angle) at mounting height of 2.0 m
Mounting Height	2.0 m recommended
Power Supply	10 to 30 VDC; current consumption 16 mA max (12 VDC)
Output	Relay (NC, N/O selectable) rated 28 VAC/DC, 0.1 A max
Alarm Period	Approx. 2 seconds
Warm-up Time	Approx. 30 seconds
Operating Temperature	-20°C to +50°C
Dimensions (W x H x D)	105 mm x 56 mm x 45 mm
Weight	Approx. 100 g
Main Functions	Motion detection with adjustable sensitivity; pulse count selectable (1, 2, or 3); tamper switch; LED indicator for alarm
Maintenance & Cleaning	Clean lens with soft dry cloth; avoid solvents; check mounting and wiring periodically
Safety	Use only with specified power supply; disconnect power before installation; follow local electrical codes
Spare Parts & Repairability	No user-serviceable parts; replace entire unit if faulty; contact OPTEX support
General Information	Designed for indoor use; wall or ceiling mount; immune to small animals (up to 20 kg) with optional pet alley mask

Frequently Asked Questions - AP2-20N OPTEX

How do I wire the AP2-20N motion detector?

Connect the power supply (10-30 VDC) to the red (+) and black (-) terminals. The relay output is available on the green (N/C) and white (N/O) terminals. Common (C) is orange. Ensure power is off during wiring.

What is the detection range of the AP2-20N?

The detection range is 12 meters by 12 meters with a 90° wide angle at a mounting height of 2.0 meters.

Can I adjust the sensitivity of the detector?

Yes, the AP2-20N has a built-in sensitivity adjustment. Use the potentiometer on the PCB to set the desired level. Additionally, the pulse count can be set to 1, 2, or 3 to reduce false alarms.

How do I mount the AP2-20N?

Mount at a height of 2.0 meters on a wall or ceiling using the provided bracket. Ensure the lens faces the area to be protected. Use the template for drilling holes and run wires through the back opening.

What does the LED indicator mean?

The LED blinks for about 2 seconds when motion is detected. It remains off during normal standby. If the LED stays on continuously, there may be a wiring fault or the detector is in warm-up mode (30 seconds).

Why does my AP2-20N trigger false alarms?

False alarms can be caused by rapid temperature changes, pets, or mounting issues. Try increasing the pulse count to 3, reducing sensitivity, or using the 'pet alley' mask to ignore small animals (up to 20 kg). Ensure the detector is not facing heat sources or direct sunlight.

What is the tamper function?

The tamper switch is normally closed (NC) and opens if the cover is removed. It can be used to trigger an alarm when unauthorized access to the detector occurs. Connect the tamper output (yellow wire) to your alarm panel.

Can I use the AP2-20N outdoors?

No, the AP2-20N is designed for indoor use only. Exposure to moisture, extreme temperatures, or direct sunlight may damage the unit and cause unreliable detection.

How do I clean the detector lens?

Use a soft, dry cloth to gently wipe the lens. Do not use any solvents or abrasive cleaners as they may damage the plastic lens and affect detection.

What is the warranty period for the AP2-20N?

OPTEX offers a limited warranty of 2 years from the date of purchase. It covers manufacturing defects under normal use. For detailed terms, refer to the official warranty policy or contact your distributor.

USER MANUAL AP2-20N OPTEX

Motion detection and smart automation

Narrow curtain indoor motion detector providing reliable and stable performance up to a range of 6m (20ft.). Ideal for protecting windows, hallways, doors and a variety of other commercial and residential applications.

Reliable motion detection with a range of up to 6 m (20ft.)

Easy installation in wall or ceiling creating a curtain detection area

Flexible mounting height between 2.4 - 3.6 m (8ft. to 12ft.)

Wall mountFlexible installation Ceiling mount

Selectable sensitivity

Detection sensitivity can be adapted to the ambience conditions for stable performance.

SENSITIVITY

LOW HIGH

Specifications

MODEL	AP2-20N
Detection Method	Passive Infrared
Coverage	6m x 1m - mounting height at 3.6m (20ft x 3.3ft - mounting height at 12ft)
Mounting type	Wall and ceiling
Mounting Height	2.4m - 3.6m (8ft - 12ft)
Area Width	1m max - mounting height at 3.6m (3.3ft max - mounting height at 12ft)
Sensitivity	2°C at 0.6m/s (35.6°F at 2ft/s)
Detection speed	0.3m - 3m/s (1ft - 10ft/s)
LED Indicator	Switchable ON/OFF
Sensitivity Adjustment	H/L
Alarm Output	Approx. 2.5 sec, N.C., 28V DC, 200mA max
Tamper Switch	N.C., opens when cover is removed. N.C. 28V DC, 100mA (max)
Warm-up Period	Approx. 60sec
Power Input	9.5 - 16V DC
Current Draw	12mA (max)
Weight	Approx. 1.75oz (Approx. 50g)
Operating Temperature	-20°C - +50°C (-4°F - +122°F)
Environmental Humidity	95% max
RF Interference	No alarm 10V/m at 80MHz - 1GHz
Application Environment	Indoor

*Specifications and designs are subject to change without prior notice.

Double conductive shielding

OPTEX patented double conductive shielding allows the AP2-20N sensor to block RFI and visible light disturbance from sunlight or strong lamps.

Dimensions

Installation Parameters

Installation Height (H) 2.4m (8ft)		3.0m (10ft)	3.6m (12ft)
Max. area width	0.6m (2ft)	0.8m (2.5ft)	1m (3ft)
Max. area length	6m (20ft)	6m (20ft)	6m (20ft)
Recommended Distance Adjacent to Wall or Ceiling	0.5m (1.5ft)	0.6m (2ft)	0.7m (2.5ft)

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